Do you have asthma, diabetes or heart problems? Do you live in a neighborhood where there is more cement and concrete than trees or grass? Are you African American?

And do you own an air conditioner?

If you answered yes to the first questions, and no to the last one, then you need to start thinking about how climate change is going to impact you in your urban neighborhood – and you need to do it right now.

At a press conference held in the Cully neighborhood – considered to be at extra risk -- Ben Duncan, Multnomah County program manager for health equity and winner of the Billi Odegaard Health Prize in 2011, laid out the specifics of who is most impacted and why.

"All populations are vulnerable to changes in our climate," he said. "We also know that some are more vulnerable than others."

Who is Most Affected?

Are African American households hit harder by climate change than is the larger population? Several studies have concluded the answer is yes.

In fact a significant body of research suggests that Black people care more about climate change than any other group in the United States.

The racial impact of global warming is laid out in the Congressional Black Caucus Foundation's 2004 report, "Climate Change: An Unequal Burden." (click here to download the PDF)

"Where U.S. Energy Policy is concerned, African Americans are proverbial canaries in the mineshaft," the report says. "We are on the frontline of the likely social, environmental, and economic upheaval resulting from climate change."

Reports and calls to action specifically within Black communities nationwide picked up first after Hurricane Katrina in 2006 and again after Hurricane Sandy in 2012.

The CBC Foundation listed three findings:

1) African Americans are already hit more than other groups by the health effects of climate change, including deaths during heat waves and from worsened air pollution. "Similarly, unemployment and economic hardship associated with climate change will fall most heavily on the African American community," the report says.

2) African Americans bear less responsibility for climate change than other Americans do because "both historically and at present, African Americans emit less greenhouse gas."

3) Finally, the CBC Foundation warns that policies to help soften or fix climate change are likely to "generate large health and economic benefits or costs for African Americans, depending on how they are structured.

"Unless appropriate actions are taken to mitigate its effects or adapt to them, climate change will worsen existing equity issues within the United States," the Black Caucus says.

The county's charts show the elderly, disabled, people living in poverty, communities of color and the homeless are the people most likely to be concentrated in parts of the city with fewest trees, greenbelts, parks or waterways.

'Urban Heat Islands'

Multnomah County's short list of public impacts includes:

-- an increase in heat-related illness and deaths, including heart emergencies, especially "among vulnerable populations such as the elderly, low income, homeless, pregnant women, and individuals with outdoor occupations;"

-- "diminished lung function, increased asthma, and increases in premature mortality," from air pollution, including ozone;

-- and more diseases spread by insects and vermin -- especially mosquitoes that carry West Nile virus -- due to longer breeding seasons.

Of extra concern is the "urban heat island" effect, in which the concentration of paved surfaces in a neighborhood absorbs heat and magnifies it, boosting temperatures hotter than the surrounding area.

In 1995 some 750 people died in Chicago's infamous heat wave when daytime temperatures spiked for just five days in a row – the hottest day reached 106 degrees, but, experts say, the heat island effect made it closer to 150 degrees in some spots.

Most of the dead were elderly, disabled and African American people who did not want to open their windows or go outside for fear of crime, reports said at the time.

Experts say similar heat waves will especially impact the Pacific Northwest because our climate has historically been so mild that few people have air conditioners; an increase in daytime, and nighttime, heat waves in summer has already begun, the hottest clocking in at 115 degrees in 2009.

Duncan says the simple question of where people live and how rich or poor they are can make all the difference in terms of who is most hurt by the extra smog, heat and vermin that all come with global warming.

"These are people who do not have the means to adapt or to get out of town; these are people who often live in substandard housing, conditions that already have mold and mildew that exacerbate their children's asthma," he says.

"They are elders who are not socially mobile but they live in a heat island, and they may have little access to parks and greenspaces because they have little choice in their housing options.

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